1. A new substance is formed. In a chemical change, new chemical and physical properties of the substance are formed.
2. Differences Between Physical and Chemical Change
When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged.
When a substance undergoes a chemical change, its molecular composition is changed entirely. Thus, chemical changes involve the formation of new substances.
Physical change is a temporary change.
A chemical change is a permanent change.
A Physical change affects only physical properties i.e. shape, size, etc. Chemical change both physical and chemical properties of the substance including its composition .
A physical change involves very little to no absorption of energy.
During a chemical reaction, absorption and evolution of energy take place.
Some examples of physical change are freezing of water, melting of wax, boiling of water, etc.
A few examples of chemical change are digestion of food, burning of coal, rusting, etc.
3. When a solid is heated, the particles gain sufficient energy to break away from one another and move past each other. The change from solid to liquid is called melting or fusion.
4. When a combustible substance burns, a chemical reaction occurs in which the substance (fuel) combines with oxygen, and gives off heat, gases, and often light (flames). ... However, oxidizing materials can supply combustible substances with oxygen and support a fire even when air is not present.
5. Effects of exposure to low oxygen concentrations can include giddiness, mental confusion, loss of judgment, loss of coordination, weakness, nausea, fainting, loss of consciousness and death. The immediate effects of low oxygen environments are due to our body's oxy- gen transport system.
1. A chemical change is a change that involves a change in the chemical composition of matter. ... A new substance is formed. In a chemical change, new chemical and physical properties of the substance are formed.
2.that a physical change is a change in properties such as texture, shape, or state, while a chemical change represents the formation of a new substance after atoms are rearranged in a chemical reaction.
3.When a solid is heated, the particles gain sufficient energy to break away from one another and move past each other. The change from solid to liquid is called melting or fusion.
4.When a combustible substance burns, a chemical reaction occurs in which the substance (fuel) combines with oxygen, and gives off heat, gases, and often light (flames). ... However, oxidizing materials can supply combustible substances with oxygen and support a fire even when air is not present.
5.Effects of exposure to low oxygen concentrations can include giddiness, mental confusion, loss of judgment, loss of coordination, weakness, nausea, fainting, loss of consciousness and death. The immediate effects of low oxygen environments are due to our body's oxy- gen transport
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Answer:
1. A new substance is formed. In a chemical change, new chemical and physical properties of the substance are formed.
2. Differences Between Physical and Chemical Change
When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged.
When a substance undergoes a chemical change, its molecular composition is changed entirely. Thus, chemical changes involve the formation of new substances.
Physical change is a temporary change.
A chemical change is a permanent change.
A Physical change affects only physical properties i.e. shape, size, etc. Chemical change both physical and chemical properties of the substance including its composition .
A physical change involves very little to no absorption of energy.
During a chemical reaction, absorption and evolution of energy take place.
Some examples of physical change are freezing of water, melting of wax, boiling of water, etc.
A few examples of chemical change are digestion of food, burning of coal, rusting, etc.
3. When a solid is heated, the particles gain sufficient energy to break away from one another and move past each other. The change from solid to liquid is called melting or fusion.
4. When a combustible substance burns, a chemical reaction occurs in which the substance (fuel) combines with oxygen, and gives off heat, gases, and often light (flames). ... However, oxidizing materials can supply combustible substances with oxygen and support a fire even when air is not present.
5. Effects of exposure to low oxygen concentrations can include giddiness, mental confusion, loss of judgment, loss of coordination, weakness, nausea, fainting, loss of consciousness and death. The immediate effects of low oxygen environments are due to our body's oxy- gen transport system.
Explanation:
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answer:
1. A chemical change is a change that involves a change in the chemical composition of matter. ... A new substance is formed. In a chemical change, new chemical and physical properties of the substance are formed.
2.that a physical change is a change in properties such as texture, shape, or state, while a chemical change represents the formation of a new substance after atoms are rearranged in a chemical reaction.
3.When a solid is heated, the particles gain sufficient energy to break away from one another and move past each other. The change from solid to liquid is called melting or fusion.
4.When a combustible substance burns, a chemical reaction occurs in which the substance (fuel) combines with oxygen, and gives off heat, gases, and often light (flames). ... However, oxidizing materials can supply combustible substances with oxygen and support a fire even when air is not present.
5.Effects of exposure to low oxygen concentrations can include giddiness, mental confusion, loss of judgment, loss of coordination, weakness, nausea, fainting, loss of consciousness and death. The immediate effects of low oxygen environments are due to our body's oxy- gen transport
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